CNI QCM486 Manual
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CNI QCM486 Manual

Miniature protector connector (mpc)
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Contents
1. General ........................................................ 1
2. Description ................................................... 1
3. Precautions ................................................... 2
4. Components ................................................. 3
5. Protectors ..................................................... 3
6. Mounting Bar Kits .......................................... 4
Frame Capacities............................................... 7
in Locations With Cable Vaults. .......................... 8
Locations Without Cable Vaults ......................... 8
Remote Frames .............................................. 10
11. Installing Stubless Connectors ...................... 9
12. Testing ...................................................... 11
13. Cross Connect Wire ................................... 12
04012022
QCM486 Miniature Protector Connector (MPC)
- 1 -
1. General
1.1 This document describes the installation
and testing of the QCM486 Miniature
Protector Connector manufactured
1.2 This document is being reissued since Acquisition by
Bourns, Inc.
1.3 Contact your customer service
representative to purchase accessories that are
sold separately or to request installation information, if
necessary.
2. Description
2.1 The QCM486 Miniature Protector
Connector (MPC) (Figure 1) is a 100-pair
connector for terminating and protecting cable
pairs in Central Offices (CO) and customer
premises.
2.2 The MPC provides:
• Voltage protection or voltage/current
protection on cable pairs
• Direct-feed facility between outside-plant
cable pairs and CO when electrical
protection is not required.
• Disconnection between outside-plant cable
pairs and CO or customer premises pairs.
• Cross-connection between outside-plant
cable pairs and CO or customer premises
connecting block.
• Testing access to outside-plant cable pairs.
• Testing access to CO or customer premises
pairs.
• Guards and markers for identifying and
protecting special service circuits.
2.3 The MPC can be mounted on
Conventional Distributing Frames, Compact
Distributing Frames, or Customer Premises
Distributing Frames.
comtestnetworks.com

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  • Page 1: Table Of Contents

    QCM486 Miniature Protector Connector (MPC) - 1 – 1. General 1.1 This document describes the installation and testing of the QCM486 Miniature Protector Connector manufactured 1.2 This document is being reissued since Acquisition by Bourns, Inc. 1.3 Contact your customer service...

  • Page 2: Precautions

    QCM486 Miniature Protector Connector (MPC) - 2 – 2.4 The MPC is available stubless or equipped • To avoid damage to the MPC from rolling with a 100-pair (top or bottom entry) stub. ladders on the conventional MDF, the Available stub lengths are 9.1, 15.2, or 30.5 mm ladder guard rail projection must be 650 (30, 50 or 100 ft.) with 22 or 24-gauge...

  • Page 3: Components

    QCM486 Miniature Protector Connector (MPC) - 3 – 4. Components 5. Protectors • T- and R-conductor connections to one CO 5.1 Each protector unit (Figure 3) has male cross-connect terminal pair through the two pins on the base, a finger grip for removal, and short pins on the base.

  • Page 4: Mounting Bar Kits

    QCM486 Miniature Protector Connector (MPC) - 4 – 5.2 The detent latch on the protector unit 6. Mounting Bar Kit engages the cut-out in the protector housing when the unit is in the partially withdrawn detent position. To insert the unit completely or to remove it, depress the detent latch.
  • Page 5 QCM486 Miniature Protector Connector (MPC) - 5 – 6.1 Mounting bar kits are for use on distributing frame verticals which are not drilled to fit the MPC 5.5-in. mounting centers. To select appropriate kit (refer to Table 2). 6.2 Before installing, make sure you have the right mounting bar kit for installation on the distributing frame.
  • Page 6 QCM486 Miniature Protector Connector (MPC) - 6 – Repeating Steps 3, 4, and 5, mount the 6.9 Using flexible ground strap and clamp remaining bars immediately above the first. plate, connect the mounting bar kit to the Begin with 1.2-mm (4-ft.) bars, if NOTE: ground bar of frame (Figure 6).

  • Page 7: Recommended Distributing Frame Capacities

    QCM486 Miniature Protector Connector (MPC) - 7 – 7. Recommended Distributing Frame Capacities comtestnetworks.com...

  • Page 8: Installing Stubbed Connectors In Locations With Cable Vaults

    QCM486 Miniature Protector Connector (MPC) - 8 – 8. Installing Stubbed Connectors in • Conventional (PDF) 305 mm (12 in.) from Locations With Cable Vaults floor (Figure 7). Position the MPC so that the plastic stud 8.1 Open cable vault entrance hole(s) or...

  • Page 9: Locations Without Cable Vaults

    QCM486 Miniature Protector Connector (MPC) - 9 – 9. Installing Stubbed Connectors in Locations Without Cable Vaults 9.1 Remove the MPC from its shipping container (keep protective material around the connector assembly). 9.2 Mark the stub cable with the identification number and pair count of the cable to which the stub is to be spliced.

  • Page 10: Installing Dual Stub Connector In Remote Frames

    QCM486 Miniature Protector Connector (MPC) - 10 – 10.8 Dress one of the stubs to the distribution frame, and then dress the second stub. 10.9 Mark the MPC designation strip with the number and pair-count of the cable being terminated.
  • Page 11 QCM486 Miniature Protector Connector (MPC) - 11 – 11.5 Unpack the MPC, remove protective material, and mount the MPC on the adapter. Tighten thumbscrews to secure the MPC on the adapter. 11.6 Loosen the locking thumbscrews, swing the MPC full left, and lock in position.

  • Page 12: Testing

    QCM486 Miniature Protector Connector (MPC) - 12 – 12. Testing For MPC dual stubs: test field for this is NOTE: not connected. Test field terminals are numbered to show beginning and end of each row of five terminals (Figure 10): •...

  • Page 13: Cross Connect Wire

    QCM486 Miniature Protector Connector (MPC) - 13 – 13. Cross Connect Wire 13.2 Removal Use only approved type wire, NTCL/ When disconnecting wires on the cross-connect NOTE: NOTE: CSW with quick clip terminals. field, take care not to loosen or break other connections.

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